Disk harrow.



No. 831,789; PATENTED SEPT. 25, 1906. -w. 0. KING. DISK HARROW.

APPLICATION FILED JUNE'Z, 1906- Q! 5 7/21/72 AI flzfw UNITED STATESWILLIAM C.

PATENT OFFICE.

KING, OF CAMPBELL, CALIFORNIA, ASSIGNOR OF ONE-HALF TO W. G. AIKEN, OFCAMPBELL, CALIFORNIA.

DISK HARROW.

Specification of Letters Patent.

Patented Sept. 25, 1906.

Application filed June 7.1906. Serial 1%. 320.603.

To all whmn it may concern.-

Be it known that I, WILLIAM C. KING, a

citizen of the United States, residing at Campbell, in the county. ofSanta Clara and State of California, have invented new and usefulImprovements in Disk Harrows, of which the following is a specification.

Myinvention relates to an apparatus for cultivating the ground.

It consists in the combination of independently-mounted series of disks,means for adjusting thesame, and in details of construction which willbe more fully explained byreference .to the accompanying drawings, inwhich- Figure 1 is a perspective view of my apparatus. Fig. 2 is adetail of link connecting with the rear shaft.

. downwardly and carrying boxes in which the The main frame of myapparatus consists of metal side barsA. These bars connect at the rearwith the transverse bar 2, and at the front they are curved, -as shownat A, and

connect with a horizontally-disposed draft.

.shafts 10 are supported. Upon these shafts are the two sets of disks 11, and itwill be seen from this construction that the two sets of disksbeing carried by the independent turnable channel-irons 8 may be turnedat difierent angles about their vertical supports.

At the rear of the apparatus areyokes 12, the lower ends of which aresecured to the side bars A, and they are connected at the top by atransverse bar 13. The lower part of these yokes form guide-channelswithin which a channel iron bar 14 is movable. This bar has a centralvertical shaft, as at 15, turnable in a sleeve or box 16, which is fixedto the bar 13, the shaft 15 having an enlarged foot and being bolted orotherwise ]s3ecured to the channel-iron 14., as at 15.

this construction the channel-iron bar being centrally pivoted andmovable within .the guide-yokes 12 may be swiveled about its center andturned to a distance limited by the length of the guiding portion of theyokes.

To the channel-iron bar 14 standards 17 are fixed, extending downwardlyand having at the lower end boxes or supports in which the single shaft18 is carried. Upon this shaft are mounted the disks 19, extending fromend to end of the shaft and separated to such a distance that whentheapparatus is drawn over the ground these disks will' travel between thelines of travel of the disks 11, and thus thoroughly turn over andpulverize the whole surface in which the appa- 7o ratus may pass.

I have found by experience that the turning of the disks 11 in twoseparate series and the .disks 19 in one set produces the best resultsand prevents the apparatus from side movements which cannot be properlycontrolled. Exterior to the outermost of the disks 19 at the left end ofthe machine is a disk 20 of smaller diameterthat is, if the disks 19 aresixteen inches in diameter and making a cut of something upward of four.inches the disk 20 will be about "twelve inches in diameter, so that itsedge just reaches the surface of the ground, and it serves to level theground acted upon by the 8 5 other disks and prevent the formation offurrows on this line of travel.

In order to turn the disks 11 and 19 to any desired angle and so thatthe rear disks will .travel in the spaces between the lines of .travelof the front disk, I have shown a shaft 21, j ournaled across the sidebars A, and here shown as supported upon a transverse bar A i 4 J whichextends across the central portion of the apparatus.

driver occupying a seat 23, which seat issupported from the bar A asshown, and by means of a segment 24 and a pawl 25 the V shaft 21 may beturned and locked at any desired position. At the right end of the shaft21 is a rocker-arm 26, and a rod 27 connects the outer end of thisrocker-arm with an eyebolt 28, which is secured to the right end of thechannel-bar 8 at this side of the appara- 1o 5 tus. Upon the oppositeend of the shaft 21 is fixed a double rocker-arm 29. A rod 30 connectsthe lower end of this rocker-arm.

Fixed to this shaft 21 is a' -5 hand-lever 22, which is within reach ofthe with the left front channel-bar 8, and a rod 31 connects the upperend of the rocker-arm 29 with the left end of the channel-bar 14, thisconnection being made by means of an eyebolt, as at 32, which passesdown through the top of the channel-bar and into the post 17. By thisconstruction it will be seen that when the shaft 21 is turned by pushingthe lever 22 forward the right end of the right set of front disks 11will be pushed forward and the inner end correspondingly retracted byturning the support around its vertical swivel-post, and the rod 30,connecting the lower end of the rocker-arm 29 with the left end of theleft front channel-bar 8, will draw the outer end of this channel barand the disks supported therefrom so as to stand at a similar angle withthe disks at the right.

The connection 31 between the upper end of the rocker-arm 29 and thechannel-bar 14 draws the left end of this channel-bar forward and withit the disk-shaft and disks to stand at an angle converging toward theleft with relation to the disks 8, thus placing the three sets of disksin the desired relation for properly cultivating the soil.

It will be seen that by reason of the curved bars A extending upwardlyand rearwardly from the draft-bar 3 and connected at the top with thechannel-bars 8 a line of draft will be through these channel-bars andwill act through the standards 9 upon the disk-shafts and disks 11.

33 is a brace-rod having its front end bolted to the transverse bar Aand its rear end connects by a loose link 34 with the central portion ofthe rear disk-shaft 18, thus providing a direct line of draft betweenthe frame and these disks, while at the same time allowing a freeswiveling motion of said disks as required.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. In a harrow, a main frame having side bars and transverseconnecting-bars, a pair of transverse swivel-bars at the front, a set ofdisks carried by each of the said swivel-bars, a draft-bar located infront of the disks, said side bars of the main frame having their frontends extending beyond the swivel-bars and curved downwardly andconnecting with the draft-bar, and a centrally-located bracingframeconnecting said draft-bar with the front transverse connecting-bar.

2. In a harrow, two sets of disks and shafts swiveled channel-ironframes with downwardly-projecting standards upon which the disk-shaftsare carried, a single shaft extending across the entire width of therear portion of the machine, a channeled iron bar with standards, adisk-shaft and disks carried thereby, a central vertical pivot aboutwhich the channel-iron bar and rear disks are turnable, guides withinwhich the ends of the bar are movable in a horizontal plane, a rockshaftand lever and rocker-arms with connecting-rods whereby the front andrear disks are simultaneously turned at angles with each other.

3. In a harrow, a main frame consisting of side bars having the frontends curved downwardly and connecting with the draft-bar, transversebars, swiveling channel-bars j ournaled to the main frame, standardsextending downwardly from the channelbars, diskcarrying shafts supportedby said standards, mechanism by which the channel-bars and disks areturnable to stand at angles with relation to each other, and a brace-barhaving its front end fixed to the main frame and a swivel connectionbetween its rear end, and the rear disk-carrying shaft whereby the pullfrom the draft-bar is directly from the main frame to the reardisk-shaft.

4. In a harrow, a main frame, two front disk-carrying shaftsindependently mounted and turnable about vertical axes to stand atangles transverse to the line of travel, a single rear, disk-carryingshaft turnable about a central vertical axis, and guides and stops tolimit its movement, and an exterior levelingdisk of smaller diameterthan the main disks.

5. An earth cultivating and harrowing device, said device including amain frame having two independently-swiveling disk-carrying shafts atthe front, and a single swiveling shaft atthe rear, and mechanism bywhich said shafts are turnable to cause the edges of the rear disks totravel in lines between those of the front disks, and an exterior diskof smaller diameter than the main disks, carried upon the reardisk-shaft.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

WILLIAM 0. KING.

Witnesses:

L. H. CASE, MARY E. BURNS.

ICC)

